Sennheiser seals its reputation as the classiest name in headphones with the stunning HD600, a stylish and high-tech headphone that's exquisitely pleasing to listen to and nearly as pleasing to wear. A near-perfect mating of art and science, the HD600 uses an open, over-ear design to eliminate unwanted resonances and optimally position its large, dynamic drivers just outside your ears-so they work more like miniature speakers than traditional in-ear or against-ear drivers.